9920512 has 56 divisors (see below), whose sum is σ = 22805136. Its totient is φ = 4227072.

The previous prime is 9920507. The next prime is 9920513. The reversal of 9920512 is 2150299.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9920513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57258 + ... + 57430.

Almost surely, 2^9920512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9920512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11402568).

9920512 is an abundant number, since it is smaller than the sum of its proper divisors (12884624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9920512 is an equidigital number, since it uses as much as digits as its factorization.

9920512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 182 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 9920512 is about 3149.6844286373. The cubic root of 9920512 is about 214.8711107779.

The spelling of 9920512 in words is "nine million, nine hundred twenty thousand, five hundred twelve".